Graphic user interface for a display screen



FIG. 1 is a front view of a graphical user interface for a display screen in an embodiment of the present invention; and,

FIG. 2 is a front view of a graphic user interface for a display screen in another embodiment of the present invention.

The broken line showings of the display screen, pictures, patterns, characters, and symbols are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a graphic user interface for a display screen, as shown and described. 